B

Boron tribromide

IUPAC: tribromoborane

BBr3 Inorganic Compounds CAS 10294-33-4
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Quick Reference
Formula / NotationBBr3
CAS Number10294-33-4
Molecular Weight250.53
Melting Point-51 °F (USCG, 1999)
Boiling Point196 °F at 760 mmHg (USCG, 1999)
Density2.645 at 68 °F (USCG, 1999) - Denser than water; will sink
SolubilityDecomposes (NIOSH, 2024)
AppearanceBoron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.
Also Known Astribromoborane; Tribromoborane; 10294-33-4; Borane, tribromo-; Boron bromide; Tribromoboron; Boron bromide (BBr3); A453DV9339; DTXSID4065028; RefChem:570057
CategoryInorganic Compounds

What is Boron tribromide?

Boron tribromide (BBr3) is an inorganic compound that appears as Boron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.. It has a molecular weight of 250.53 g/mol. Its IUPAC name is tribromoborane. Boiling point: 196 °F at 760 mmHg (USCG, 1999). Melting point: -51 °F (USCG, 1999).

Formula & Notation

BBr3

IUPAC Name: tribromoborane

Other Names / Synonyms: tribromoborane; Tribromoborane; 10294-33-4; Borane, tribromo-; Boron bromide; Tribromoboron; Boron bromide (BBr3); A453DV9339; DTXSID4065028; RefChem:570057

Properties & Characteristics

Appearance: Boron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.. Molecular formula: BBr3. Molecular weight: 250.53 g/mol. Boiling point: 196 °F at 760 mmHg (USCG, 1999). Melting point: -51 °F (USCG, 1999). Density: 2.645 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: Decomposes (NIOSH, 2024). Vapor pressure: 40 mmHg at 57 °F (NIOSH, 2024).

Physical Data

PropertyValue
Melting Point-51 °F (USCG, 1999)
Boiling Point196 °F at 760 mmHg (USCG, 1999)
Density2.645 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight250.53
SolubilityDecomposes (NIOSH, 2024)
AppearanceBoron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Boron tribromide
Formula BBr3
CAS Number 10294-33-4
Molecular Weight 250.53
Synonyms tribromoborane; Tribromoborane; 10294-33-4; Borane, tribromo-; Boron bromide; Tribromoboron; Boron bromide (BBr3); A453DV9339; DTXSID4065028; RefChem:570057

Frequently Asked Questions

Boron tribromide (BBr3) is an inorganic compound that appears as Boron tribromide appears as a colorless, fuming liquid with a pungent odor. Boiling point 194 °F. Freezing point -51 °F. Very toxic by inhalation. Corrosive to metals and tissue.. It has a molecular weight of 250.53 g/mol. Its IUPAC name is tribromoborane. Boiling point: 196 °F at 760 mmHg (USCG, 1999). Melting point: -51 °F (USCG, 1999).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.